1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2014 Intel Corporation 3 */ 4 5 #ifndef EAL_VFIO_H_ 6 #define EAL_VFIO_H_ 7 8 #include <rte_common.h> 9 10 /* 11 * determine if VFIO is present on the system 12 */ 13 #if !defined(VFIO_PRESENT) && defined(RTE_EAL_VFIO) 14 #include <linux/version.h> 15 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0) 16 #define VFIO_PRESENT 17 #else 18 #pragma message("VFIO configured but not supported by this kernel, disabling.") 19 #endif /* kernel version >= 3.6.0 */ 20 #endif /* RTE_EAL_VFIO */ 21 22 #ifdef VFIO_PRESENT 23 24 #include <stdint.h> 25 #include <linux/vfio.h> 26 27 #define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU 28 29 #ifndef VFIO_SPAPR_TCE_v2_IOMMU 30 #define RTE_VFIO_SPAPR 7 31 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17) 32 #define VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 18) 33 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19) 34 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20) 35 36 struct vfio_iommu_spapr_register_memory { 37 uint32_t argsz; 38 uint32_t flags; 39 uint64_t vaddr; 40 uint64_t size; 41 }; 42 43 struct vfio_iommu_spapr_tce_create { 44 uint32_t argsz; 45 uint32_t flags; 46 /* in */ 47 uint32_t page_shift; 48 uint32_t __resv1; 49 uint64_t window_size; 50 uint32_t levels; 51 uint32_t __resv2; 52 /* out */ 53 uint64_t start_addr; 54 }; 55 56 struct vfio_iommu_spapr_tce_remove { 57 uint32_t argsz; 58 uint32_t flags; 59 /* in */ 60 uint64_t start_addr; 61 }; 62 63 struct vfio_iommu_spapr_tce_ddw_info { 64 uint64_t pgsizes; 65 uint32_t max_dynamic_windows_supported; 66 uint32_t levels; 67 }; 68 69 /* SPAPR_v2 is not present, but SPAPR might be */ 70 #ifndef VFIO_SPAPR_TCE_IOMMU 71 #define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) 72 73 struct vfio_iommu_spapr_tce_info { 74 uint32_t argsz; 75 uint32_t flags; 76 uint32_t dma32_window_start; 77 uint32_t dma32_window_size; 78 struct vfio_iommu_spapr_tce_ddw_info ddw; 79 }; 80 #endif /* VFIO_SPAPR_TCE_IOMMU */ 81 82 #else /* VFIO_SPAPR_TCE_v2_IOMMU */ 83 #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU 84 #endif 85 86 #define VFIO_MAX_GROUPS RTE_MAX_VFIO_GROUPS 87 #define VFIO_MAX_CONTAINERS RTE_MAX_VFIO_CONTAINERS 88 89 /* 90 * we don't need to store device fd's anywhere since they can be obtained from 91 * the group fd via an ioctl() call. 92 */ 93 struct vfio_group { 94 int group_num; 95 int fd; 96 int devices; 97 }; 98 99 /* DMA mapping function prototype. 100 * Takes VFIO container fd as a parameter. 101 * Returns 0 on success, -1 on error. 102 */ 103 typedef int (*vfio_dma_func_t)(int); 104 105 /* Custom memory region DMA mapping function prototype. 106 * Takes VFIO container fd, virtual address, physical address, length and 107 * operation type (0 to unmap 1 for map) as a parameters. 108 * Returns 0 on success, -1 on error. 109 */ 110 typedef int (*vfio_dma_user_func_t)(int fd, uint64_t vaddr, uint64_t iova, 111 uint64_t len, int do_map); 112 113 struct vfio_iommu_type { 114 int type_id; 115 const char *name; 116 bool partial_unmap; 117 vfio_dma_user_func_t dma_user_map_func; 118 vfio_dma_func_t dma_map_func; 119 }; 120 121 /* get the vfio container that devices are bound to by default */ 122 int vfio_get_default_container_fd(void); 123 124 /* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */ 125 const struct vfio_iommu_type * 126 vfio_set_iommu_type(int vfio_container_fd); 127 128 int 129 vfio_get_iommu_type(void); 130 131 /* check if we have any supported extensions */ 132 int 133 vfio_has_supported_extensions(int vfio_container_fd); 134 135 int vfio_mp_sync_setup(void); 136 void vfio_mp_sync_cleanup(void); 137 138 #define EAL_VFIO_MP "eal_vfio_mp_sync" 139 140 #define SOCKET_REQ_CONTAINER 0x100 141 #define SOCKET_REQ_GROUP 0x200 142 #define SOCKET_REQ_DEFAULT_CONTAINER 0x400 143 #define SOCKET_REQ_IOMMU_TYPE 0x800 144 #define SOCKET_OK 0x0 145 #define SOCKET_NO_FD 0x1 146 #define SOCKET_ERR 0xFF 147 148 struct vfio_mp_param { 149 int req; 150 int result; 151 union { 152 int group_num; 153 int iommu_type_id; 154 }; 155 }; 156 157 #endif /* VFIO_PRESENT */ 158 159 #endif /* EAL_VFIO_H_ */ 160